SAN FRANCISCO -- The fatal shootings of three men whose bodies were found inside a home in rural Northern California stemmed from a botched marijuana deal, authorities said Wednesday.

"At this point in our investigation and evidence collected at the scene, we believe that a marijuana drug deal resulted in the death of the victims," Sonoma County Sheriff's Lt. Dennis O'Leary told The Associated Press.

No arrests have been made in the Tuesday killings, which occurred in the bedroom of a home off Highway 116 near Forestville.

Authorities said the victims were Raleigh Butler, 26, of Petaluma; Richard Lewin, 46, of Huntington, N.Y.; and Todd Klarkowski, 42, of Boulder, Colo.

Butler's mother lived at the home, O'Leary said. Lewin and Klarkowski flew into town to apparently buy a large amount of marijuana, O'Leary said.

"The alleged shooter or shooters were delivering the merchandise and somehow along the way, three people were shot," he said.

The triple slaying was discovered in a bedroom by Butler's brother and his girlfriend, who had become concerned after they could not reach Butler by phone for hours, O'Leary said.

No marijuana was grown on the property where the shooting occurred, officials said.

The house is near the Iron Horse Vineyards, and employees have been advised not to go in the area due to the ongoing investigation.